PRF/M: Systematic and Functional Analyses of Enamel Microstructure of Early Eutherian Mammals

PRF/M：早期真兽哺乳动物牙釉质微观结构的系统和功能分析

• 批准号: 9004789
• 负责人: William Clemens
• 金额: $ 7.36万
• 依托单位: Fellowships
• 依托单位国家: 美国
• 项目类别: Fellowship Award
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-08-15 至 1991-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9004789&HistoricalAwards=false
• 关键词: PRF; Systematic; Functional; Analyses; Enamel

Just prior to and immediately after the mass extinctions used to mark the end of the Cretaceous eutherian (placental) mammals underwent a major evolutionary radiation. Systematic analyses of these mammals, based on their gross dental morphology (the primary suite of characters available for analysis), have resulted in neither full clarification of their phylogenetic interrelationships nor in understanding of the adaptive (functional) differences that contributed to the radiation. Learning and applying the techniques involved in analysis of the microstructure of mammalian enamel will provide an additional suite of characters that can be used to address these problems and research techniques that can be passed on to graduate students who are faced with similar problems in their research. A sabbatical leave during the academic year 1990-1991 and an invitation to work in the laboratory of Professor Dr. Wighart von Koenigswald, Director of the Palaontologisches Institut der Universitat Bonn (BRD). will provide a new research environment, time to learn new research techniques and the opportunity to take a fresh approach to research on the patterns and causal factors of the early radiation of eutherian mammals.

就在用于标志白垩纪真兽类(胎盘)终结的大灭绝之前和之后，经历了一次重大的进化辐射。对这些哺乳动物的系统分析，基于它们的大体牙齿形态(可用于分析的主要特征)，既没有完全澄清它们的系统发育相互关系，也没有理解导致辐射的适应性(功能)差异。学习和应用分析哺乳动物牙釉质微结构所涉及的技术将提供一套额外的特征，可用于解决这些问题，并可将研究技术传授给在研究中面临类似问题的研究生。1990--1991学年期间休假，并邀请波恩大学古迹研究所所长Wighart von Koenigswald教授在实验室工作。这将提供一个新的研究环境，有时间学习新的研究技术，并有机会以新的方法研究真兽类早期辐射的模式和原因。